diff options
| author | Michael Niedermayer <[email protected]> | 2018-08-12 22:55:59 +0200 |
|---|---|---|
| committer | Michael Niedermayer <[email protected]> | 2018-10-28 02:22:42 +0200 |
| commit | ec573bd2eb085b40e65dd8e1cf3c488631f62ccb (patch) | |
| tree | 4b64118084c8bf962990dbf386ba815fdfc66b77 | |
| parent | 7f480bedd069df9b4b9f9646ac8c649024a76e1b (diff) | |
avcodec/shorten: Fix integer overflow in residual/LPC combination
Fixes: signed integer overflow: -540538872 + -2012739576 cannot be represented in type 'int'
Fixes: 9255/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SHORTEN_fuzzer-5758630052757504
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <[email protected]>
(cherry picked from commit db7e9082e1a1479c6a8844f7adf77eae03cc2aa7)
Signed-off-by: Michael Niedermayer <[email protected]>
| -rw-r--r-- | libavcodec/shorten.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/shorten.c b/libavcodec/shorten.c index 9094d3fc55..054494f8ce 100644 --- a/libavcodec/shorten.c +++ b/libavcodec/shorten.c @@ -391,7 +391,7 @@ static int decode_subframe_lpc(ShortenContext *s, int command, int channel, for (j = 0; j < pred_order; j++) sum += coeffs[j] * (unsigned)s->decoded[channel][i - j - 1]; s->decoded[channel][i] = get_sr_golomb_shorten(&s->gb, residual_size) + - (sum >> qshift); + (unsigned)(sum >> qshift); } /* add offset to current samples */ |